The game package is actually just titled "STAFF". It comes with 2 disks. And the instructions say:- Phase 1 (the shoot'em up): Insert disk 1 and run "ERE.PRG"- Phase 2 (the platformer): Insert disk 2 and run "MARGOULIN.PRG"

Driller really is a concept game. While there are numerous puzzles, there's very little consistency in the way that things behave, between them. It's also difficult, by sight, to figure out which cube is something you need to activate by shooting, and which is merely part of the scenary or a step to climb on.